Test 3 Study Guide Final Review

The pair of figures is similar. Find the missing side.

• x = 1
• x = 3
• x = 9
• x = 5

The pair of figures is similar. Find the missing side.

• x = 20
• x = 12
• x = 5
• x = 4

A tree is 12 feet tall and casts a shadow 9 feet long. A building nearby casts a shadow that measures 24 feet. How tall is the building? (Draw a picture, set up a proportion)

• 24 feet
• 21 feet
• 27 feet
• 32 feet

Find the height of the person using what you know about similar triangles.

• 4 ft
• 6.25 ft
• 1.25 ft
• 5.75 ft

Complete each proportion.
CB / DM  =  AC / ?

• BM
• MA
• BC
• AD

Which proportion would allow you to solve for the missing side, x?

• A

• B

• C

• D

Find side length X.

• 22.5
• 10
• 9
• 7.5

What is the measure of x?

• 12
• 15
• 6
• 9

The triangles are similar, solve for the question mark.

• 8
• 12.5
• 18
• 24

An architect built a scale model of a music theater using a scale in which 4 inches represents 30 feet. The height of the theater is 120 feet.

What is the height of the scale model in inches?

• 1 in.

• 75 in.

• 16 in.

• 120 in.